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timing in main

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twoneis 2025-04-25 08:17:21 +02:00
parent 0b3ed53674
commit 77a7faa6ff
1 changed files with 22 additions and 2 deletions
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24
code/leak.c
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@ -7,8 +7,6 @@
#include <string.h> #include <string.h>
#include <unistd.h> #include <unistd.h>
#include "timing.c"
#define LKM_DEVICE "/dev/lkm" #define LKM_DEVICE "/dev/lkm"
// where does this come from? // where does this come from?
@ -19,6 +17,28 @@
int pipes[PIPE_BUFFER][2]; int pipes[PIPE_BUFFER][2];
char buffer[0x100]; char buffer[0x100];
inline size_t
rdtsc_begin(void)
{
size_t a, d;
asm volatile("mfence");
asm volatile("rdtsc" : "=a"(a), "=d"(d));
a = (d << 32) | a;
asm volatile("lfence");
return a;
}
inline size_t
rdtsc_end(void)
{
size_t a, d;
asm volatile("lfence");
asm volatile("rdtsc" : "=a"(a), "=d"(d));
a = (d << 32) | a;
asm volatile("mfence");
return a;
}
int int
main(void) main(void)
{ {